Prefix overview
Phone numbers in prefix 401-251
This page covers the 401-251 prefix in the United States. It shows where numbers come from, which carrier is linked to the range, and how this block is structured.
If you are looking for a specific number, you can continue to its dedicated phone page. Otherwise, this page helps you understand the broader number block behind it.
PREFIX
401-251
RATE CENTER
PORTSMOUTH
CARRIER
THE VOICE APPLICATION NETWORK, LLC
RI
Prefix range
The prefix 401-251 includes numbers from 4012510000 to 4012519999.
This range is associated with the PORTSMOUTH rate center and was originally assigned to THE VOICE APPLICATION NETWORK, LLC.
Numbers in this prefix
20 numbers